celebrant vs parson

celebrant

noun
  • A person who officiates at a religious ceremony, especially a marriage or the Eucharist. 

  • A person who is celebrating something. 

  • A person who conducts formal ceremonies in the community, particularly weddings, baby namings, renewals of wedding vows and funerals. 

parson

noun
  • A Roman Catholic priest of an independent parish church. 

  • A Protestant minister. 

  • An Anglican cleric having full legal control of a parish under ecclesiastical law; a rector. 

How often have the words celebrant and parson occurred in a corpus of books? (source: Google Ngram Viewer )